Answer:
A
Step-by-step explanation:
1.
Chance of finding a bug = 0.35
Chance of not finding a bug = 1 - 0.35 = 0.65
Probability of finding a bug in the first 3 programs =
Probability of not finding a bug in 2 out of the 3 and finding a bug in 1.:
0.65^2 * 0.35 = 0.147 = 0.15
Answer is A.
2.
Probability of heads = 0.50
Probability of tails = 0.50
Probability of heads on the fourth attempt = tails x tails x tails x heads = 0.5 x 0.5 x 0.5 x 0.5 = 0.0625
The answer is B.
Pic 1
90 - 33 = 57
m<P = 180 - 57
m<P = 123
answer is <span>B. 123°
</span>
------------
pic2
m<P = 90 - 30
m<P = 60
answer is
<span>C. 60°</span>
They are following up because the answer is b shown my the graph